fill in more hwif utility functions for dereferencer

peakrdl/regblock/field_logic/templates/field_storage.sv

@@ -0,0 +1,25 @@
+// Field: {{node.get_path()}}
+always_comb begin
+    field_combo.{{field_path}}.next = '0;
+    field_combo.{{field_path}}.load_next = '0;
+    {%- for signal in extra_combo_signals %}
+    field_combo.{{field_path}}.{{signal.name}} = {{signal.default_assignment}};
+    {%- endfor %}
+    {%- for conditional in conditionals %}
+    {% if not loop.first %}end else {% endif %}if({{conditional.get_conditional(node)}}) begin
+        {%- for assignment in conditional.get_assignments(node) %}
+        {{assignment|indent}}
+        {%- endfor %}
+    end
+    {%- endfor %}
+end
+always_ff {{get_always_ff_event(resetsignal)}} begin
+    if({{resetsignal.activehigh_identifier}}) begin
+        field_storage.{{field_path}} <= {{reset}};
+    end else if(field_combo.{{field_path}}.load_next) begin
+        field_storage.{{field_path}} <= field_combo.{{field_path}}.next;
+    end
+end
+{% if has_value_output(node) -%}
+    assign {{get_output_identifier(node)}} = field_storage.{{field_path}};
+{%- endif -%}